4291 - stop copying the ELF header into memory

No need for it once the program's loaded. And we keep programs from
running the header as code.

This also simplifies the header computation in the translator.

1 files changed, 3 insertions, 3 deletions

diff --git a/subx/021translate.cc b/subx/021translate.cc
index ae110c21..94553ae9 100644
--- a/subx/021translate.cc
+++ b/subx/021translate.cc
@@ -41,7 +41,7 @@ void dump_elf_header(ostream& out) {
   // e_version
   O(0x01); O(0x00); O(0x00); O(0x00);
   // e_entry
-  int e_entry = START + /*size of ehdr*/52 + /*size of phdr*/32;
+  int e_entry = START;
   emit(e_entry);
   // e_phoff -- immediately after ELF header
   int e_phoff = 52;
@@ -73,14 +73,14 @@ void dump_elf_header(ostream& out) {
   uint32_t p_type = 0x1;
   emit(p_type);
   // p_offset
-  uint32_t p_offset = 0;
+  uint32_t p_offset = /*size of ehdr*/52 + /*size of phdr*/32;
   emit(p_offset);
   // p_vaddr
   emit(START);
   // p_paddr
   emit(START);
   // p_filesz
-  uint32_t size = (End_of_program-/*we're not using location 0*/1) + /*size of ehdr*/52 + /*size of phdr*/32;
+  uint32_t size = End_of_program - /*we're not using location 0*/1;
   emit(size);
   // p_memsz
   emit(size);